In ancient times, dogs were mainly ______helping people hunt( 打猎) .Now they are more useful-they can help the blinds, search for the bad eggs.
Which one is ________ , football or basketball?
The woman is ______ fat because he eats ______ junk food.
----Why do you make friends with Joe ? ----He isn’t a good student, but ________ he is honest(诚实的).
--- Are you _____ than your brother? --- No, I am less _____ than him.
He must _____ his sister with her math.